<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <div>
            <span>姓名:</span>
            <input type="text" v-model.trim="name" />
        </div>
        <div>
            <span>年龄:</span>
            <input type="number" v-model.trim="age" />
        </div>
        <div>
            <span>性别:</span>
            <select v-model.trim="selected">
                <option value="男">男</option>
                <option value="女">女</option>
            </select>
        </div>
        <div>
            <button @click="addedit">添加/修改</button>
        </div>
        <div>
            <table border="1" cellpadding="10" cellspacing="0">
                <tr>
                    <th>序号</th>
                    <th>姓名</th>
                    <th>年龄</th>
                    <th>性别</th>
                    <th>操作</th>
                </tr>
                <tr v-for="(item, index) in list" :key="item.id">
                    <td> {{item.id}} </td>
                    <td> {{item.name}} </td>
                    <td> {{item.age}} </td>
                    <td> {{item.gender}} </td>
                    <td>
                        <button @click="del(item.id)">删除</button>
                        <button @click="edit(item.id)">编辑</button>
                    </td>
                </tr>
            </table>
        </div>
    </div>
    <script src="../vue.js"></script>
    <script>
        const app = new Vue({
            el: '#app',
            data: {
                name: "",
                age: "",
                selected: "",
                curId: "",
                isShow: true,
                list: JSON.parse(localStorage.getItem('newList')) || []
            },
            methods: {
                addedit() {
                    if (this.isShow) {
                        if (!this.name || !this.age) return alert('请输入正确的信息')
                        
                        this.list.push({
                            id: +new Date(),
                            gender: this.selected,
                            name: this.name,
                            age: this.age
                        })
                    } else {
                        let newArr = this.list.filter((item) => item.id === this.curld);
                        newArr[0].gender = this.selected;
                        newArr[0].name = this.name;
                        newArr[0].age = this.age;
                        this.isShow = !this.isShow
                    }
                    this.name = ''
                    this.age = ''
                    this.selected = ''
                },
                del(id) {
                    this.list = this.list.filter((item) => item.id !== id);
                },
                edit(id) {
                    let newArr = this.list.filter((item) => item.id === id);
                    this.curld = id;
                    this.id = newArr[0].id;
                    this.selected = newArr[0].gender;
                    this.name = newArr[0].name;
                    this.age = newArr[0].age;
                    this.isShow = !this.isShow;
                }
            },
            watch: {
                list(newVal) {
                    localStorage.setItem('newList', JSON.stringify(newVal))
                }
            }
        })
    </script>
</body>

</html>